Manual or foot-operated air-pump.



H. T. HUTTON.

MANUAL 0R FOOT OPERATED AIR PUMP.

APPLICATION FILED MAY 15,1912.

1,1 15,941. Patented Nov. 3. 1914.

HENRY THOMAS HUTTON, OF DONAGHADEE, IRELAND.

MANUAL 0R FOOT-OPERATED AIR-PUMP.

Specification of Letters Patent.

Application filed May 15, 1912.

Patented Nov. 3, 1914. Serial No. 697,452.

To all whom it may concern:

Be it known that I, HENRY Tnoims HUT- Ton, a subject of the King of Great Britain, resldlng at Donaghadee,county Down, Ireland, have inventedxnew and useful Inr provements in or Relating to Manual or FootOperated Air-Pumps. of which the following is a s .ieciiication.

This invention hasreference to improvements in or relating to manually or foot operated air pumps, and the main object of the invention is to construct a garage pump (2'. e. a pump which need not be folded when not required for use) which pump shall occupysize for size, and leverage for leverage-substantially not more space than a foldable pump when folded together.

I have illustrated a form of my invention in the accompanying drawing, in which:

Figure 1 is a side elevation thereof, the toggle lever mechanism whereby movement is to be imparted to the piston being shown in two positions. viz., in full lines in the position which it occupies when the piston is at the forward end, and in clot and dash lines when at the rear end of its stroke. Fig. 2 is a plan view of the pump with the members in the position shown in full lines in Fig. 1, and Fig. 3Qis a front end elevation of same.

Referring to the drawing: A is a rigid frame comprising lateral members and transverse members which may be cast in one piece. The central transverse memher A of the said frame preferably forms the end wall of the cylinder B. a socket being formed in it as indicated in dotted lines in Fig. 2 to receive the rear end of the cylinder. A similar socket for the front end of the cylinder is formed in a block C which is secured between the lateral members of the frame, for example, by means of screws 0. The piston rod D has a bearing in the transverse member A of the frame and is provided with a cross-head E which is formed or provided with arms or links E. E that extend forwardly at each side of the frame and are guided to move in the same plane as the piston rod by being engaged in or with longitudinal slots or guides formed parallel to the piston rod in or on lateral members of the frame.

The toggle levcr o 'lcrating mechanism is of known construction per ac and comprises a pair of pivotally connected levers F and links F mounted at each side of the frame, p ed together and guided by a transverse brace G and carrying a pedal H. The cyl- 1nder and piston are also of known construction per 86. A

ln accordance with the present inventlon the levers F are pivotally connected to the free ends of the cross-head arms or links 'E, E by means of studs K which extend into the longitudinal slots or guides hereinbefore referred to in the lateral members of the frame and are preferably pro v ded with rollers L in order to reduce frictlon. A catch .is preferably provided to hold the toggle mechanism in the position shown in full lines in Fig. 1, and the usual pressure gage M may be provided. Spring J which are attached at one end to the frame and at the other to the free ends of the cross-head links are provided to return the parts into their normal positions.

From the foregoing description it will be seen that the reciprocating movements of the suitably guided movable ends I of the toggle levers F are communicated to the piston rod D through the intermediary of links which are arranged alongside of and so as to be at all times parallel or substantially' parallel with the piston rod.

It will be of advantage, if the full hencfit of my invention is to be attained, to make the piston rod of only just suflicient len th that when the piston is at the extreme orward end of its stroke the cross head will contact with or nearly so with the rear end of the cylinder or a stuffing box thereon. and to make the links or bars E. E of a length equal to the stroke of the piston as by doing so the length of the complete pump will be the shortest possible. It will be seen that there is no downward pressure upon the cross-head but only a direct pull. thus obviating tear and wear of the hearing or stufling box in which the piston rod reciprocates. Further. as compared with the folding pump when the latter is in use. the tog gle member which is pivoted directly to the frame may have its pivotal point set farther to the rear without increasing the total length of the pump. thereby giving a better leveragev What I claim as my invention and desire to secure by Letters Patent is:

1. A manually or ftmt-opcrnted air pump pump :vlinder secured within said frame. comprising in combination a rigid fraine,a

guideways formed in the said frame at ea h side of the cylinder parallel to the piston rod, a cross-head on the rear end of the said piston rod, links extending forwardly from each end of the said cross-head alongside the said frame and guided in the aforesaid guideways, and toggle levers pivoted on the one hand on a rearward extension of the said frame and on the other hand to the front ends of the aforesaid links.

"2. A manually or foot operated air pump comprising a rigid frame, having lateral and transverse members, a, pump cylinder secured within the frame, one of said transverse members constituting one of the cylinder heads, a block secured between said lateral members and constituting the other head of the cylinder, the heads of said cylinder being each provided with a socket to receive said cylinder, :1 piston and piston rod mounted in the cylinder, guidewnys formed in the frame at each side of the cylinder parallel to the piston rod, a cross head on the rear end of the piston rod, links extending forwardly from each end of said cross head elongside the said frame and guided in said guideways and toggle levers pivoted to a rearward extension of said frame and to the front ends of said links.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

HENRY THOMAS HUTTON. Witnesses:

E. LLOYD EDWARDS, JOHN M. QUADE.

on the one hand on a rearward extension of the said frame and on the other hand to the "front ends of the aforesaid links.

"2. A manually or foot operated air pump comprising a rigid frame, having lateral and transverse members, a pump cylinder secured within the frame, one of said transverse members constituting one of the cylinder heads, a block secured between said lateral members and constituting the other head of the cylinder, the headsof said cyl- [SEAL] Corrections In Letters Patent No 1,] 15,941.

inder being. each provided with a socket to receive said cylinder, :1 piston and piston rod mounted in the cylinder, guidewa vs formed in the frame at each side of the cylinder parallel to the piston rod, a cross head on the rear end of the piston rod, links extending forwardly from. each end of said cross head alongside the said frame and- .guided in said guideways and toggle levers 7 It is hereby certified that in Letters Patent No. 1,115,941, granted November 3,

' printed specification requiring correction as follows Page 1, claim 1, transpose lines- 111 and 112; page 2, line 1, claim 1, before the word guideways insert the words a piston and piston rod mounted in. said cylinder; and that the said Letters Patent should be read with these corrections. therein that the same may conform to the record of the case in the Patent Ofiice. I

Signed and sealed this 1st day of February, A. 1)., 1916.

.i. T. NEWTON,

Acting Commissioner of Patents.

1915, upon the application of Henry Thomas Hutton, of Donaghadee, Ireland, for i an improvement in Manual or F oot-Operated Air-Pumps}? errors appear in the v It is hereby certified that in Letters Patent No. 1,115,941, granted November 3, 1915, upon the application of Henry Thornas Hutton, of Donaghadee, Ireland, for an improvement in Manual or FootOperated Air-Pumps}? errors appear in the printed specification requiring correction as followsrPege 1, claim 1, transpose lines 111 and 112; page 2, line 1, claim 1, before the word guideways insert the words a piston and piston rod mounted in said cylinder; and that the said Letters Patent should be read with these corrections. therein that the same may conform to the record of the case in the Patent Oflicei Signed and sealed this 1st day of February, A. D., 1916.

[SEAL] J. T. NEWTON,

Acting Commissioner of Patents. 0]. 23027 

